[recipes] Also escape , in css identifiers

[Matthias Clasen <matthiasc src gnome org>]

commit df5c1a38bb4a3aec82e204156b03137149446a68
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jan 20 13:17:43 2017 -0500

    Also escape , in css identifiers
    
    Otherwise, things break.

 src/gr-utils.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gr-utils.c b/src/gr-utils.c
index 23def35..42530f7 100644
--- a/src/gr-utils.c
+++ b/src/gr-utils.c
@@ -347,7 +347,7 @@ generate_id (const char *first_string, ...)
         while (s) {
                 for (q = s; *q; q = g_utf8_find_next_char (q, NULL)) {
                         gunichar ch = g_utf8_get_char (q);
-                        if (ch > 128 || ch == '.' || ch == ' ' ||
+                        if (ch > 128 || ch == '.' || ch == ',' || ch == ' ' ||
                             ch == ']' || ch == '[' || g_ascii_iscntrl ((char)ch))
                                 g_string_append_c (str, '_');
                         else